: These are the individual levels or songs in the game.

is an archived file format typically used for distributing specialized digital content, most commonly associated with beatmaps for the rhythm game osu! . The ".7z" extension indicates it is a highly compressed archive created with the 7-Zip utility, designed to package multiple files into a single, smaller download. What is a .7z File?

: Ensure the download completed fully; a truncated archive will result in a "Header Error" during extraction.